sublimation

sub·li·ma·tion (sŭb'lə-māʹshən) n.
1. The act or process of sublimating.
2. Something that has been sublimated.

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In physics, the change of state of a substance from a solid to a gas without first becoming liquid.

One example is the vaporization of frozen carbon dioxide, or dry ice, at ordinary atmospheric pressure and temperature. The phenomenon occurs at pressures and temperatures (both relatively low) where solid and vapour phases coexist in equilibrium. Preservation of food by freeze-drying involves sublimation of water from the food in a frozen state under vacuum.

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▪ phase change
      in physics, conversion of a substance from the solid to the vapour state without its becoming liquid. An example is the vaporization of frozen carbon dioxide ( Dry Ice) at ordinary atmospheric pressure and temperature. The phenomenon is the result of vapour pressure and temperature relationships. Freeze-drying of food to preserve it involves sublimation of water from the food in a frozen state under high vacuum. See also vaporization; phase diagram.

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Universalium. 2010.

Synonyms:
(of a solid, to be again condensed) / , ,


Look at other dictionaries:

  • SUBLIMATION — Invoquer la « capacité de sublimation » pour expliquer en quoi tel individu a échappé à la névrose, comment tel grand homme s’est trouvé produire telle œuvre géniale, n’est ce point une façon bien dérisoire de répéter la question du pourquoi de… …   Encyclopédie Universelle

  • Sublimation — can have several meanings: * Sublimation (chemistry), the change from solid to gas, while at no point becoming a liquid. * Sublimation (psychology), the transformation of emotions. * Dye sublimation, the transference of printed images to a… …   Wikipedia

  • Sublimation — Sub li*ma tion, n. [LL. sublimatio: cf. F. sublimation.] 1. (Chem.) The act or process of subliming, or the state or result of being sublimed. [1913 Webster] 2. The act of heightening or improving; exaltation; elevation; purification. [1913… …   The Collaborative International Dictionary of English

  • Sublimation — Sublimation, s. Sublimiren …   Pierer's Universal-Lexikon

  • Sublimation — (lat.), Operation zur Trennung starrer flüchtiger Körper von nicht flüchtigen, unterscheidet sich von der Destillation nur dadurch, daß ihr Produkt, das Sublimat, starr und nicht flüssig ist. Die zur S. dienenden Apparate bestehen aus einem Teil …   Meyers Großes Konversations-Lexikon

  • Sublimation — Sublimation, der direkte Uebergang aus dem festen in den gasförmigen Zustand. Dieser Uebergang findet zwar stets, aber meist nur sehr langsam statt, da der Dampfdruck fester Körper selbst beim Schmelzpunkt meist sehr klein ist. Ist der Dampfdruck …   Lexikon der gesamten Technik

  • Sublimation — (lat.), chem. Operation, bestehend in der Verflüchtigung einer Substanz und darauf folgender Kondensierung in festem Zustande (als Sublimat); dient zur Reinigung von Kampfer, Salmiak, Schwefel u. dgl …   Kleines Konversations-Lexikon

  • sublimation — (n.) late 14c., in alchemy, process of purifying by heating into a vapor, from M.L. sublimationem (nom. sublimatio) refinement, lit. a lifting up, deliverance, from L. sublimare to raise, elevate, from sublimis lofty (see SUBLIME (Cf. sublime)).… …   Etymology dictionary

  • sublimation — Sublimation. s. f. Operation de Chymie, par laquelle on sublime un corps volatil …   Dictionnaire de l'Académie française

  • Sublimation — Cette page d’homonymie répertorie les différents sujets et articles partageant un même nom. Sur les autres projets Wikimedia : « Sublimation », sur le Wiktionnaire (dictionnaire universel) Le mot sublimation est employé dans… …   Wikipédia en Français

  • sublimation — (su bli ma sion) s. f. Terme de chimie. Opération par laquelle un corps solide, volatilisé par la chaleur dans un vase clos, arrive contre la paroi supérieure de ce vase, où il repasse à l état solide et s y fixe. •   Il [M. Geoffroy le cadet]… …   Dictionnaire de la Langue Française d'Émile Littré

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